Cedarjet - the transtasman fares have traditionally been "gougers" for many years - expensive even with advance purchase. Those Freedom fares mentioned above aren't too bad at all really. Both QF and NZ have been kept a tad more honest over recent years with other carriers now allowed to carry local traffic across the Tasman. Thai, China Airlines, Aerolineas, Polynesian among others are those that fly the routes and offer good alternatives to QF and NZ.(To give you an idea, full Y return SYD-AKL on either carrier is up in the over $1200's and the lowest apex at the moment is in the approx high $580's. Both offer specials lower than this on occasions but rarely under $400).
On a seperate note, Yowzer! No wonder the pilots are a tad angry and threatening to walk. I guess they see this, and possibly quite rightly, the thin edge of the wedge by NZ allowing it's lower cost subsidiary subsidiary take over NZ mainline routes. Bit of a slap in the face by NZ as well just quietly - they manage to get the pilots to drop their action and mediate further, then on the same day announce this!!